Fireproof window construction.



E. H. LUNKEN & G. M. CONKLIN.

FIBEPROOF WINDDW CONSTRUCTION. usuclum! mu 23.41, 199s.

902,979. Patented Nov.3,19os.

5 SHEETS-SHEET 1.

E. H. LUNKBN & C. M. CONKLIN.

FIBEPBOOF WINDOW CONSTRUCTION.

ArPLIoA'rxon FILED 21:15.11, 190s.

902,979. Patented N0v.3,19os.

5 SHEETS-HEBT 2.

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E. H. LUNKEN & C. M. CONKLIN.`

HREPROOP WINDOW CONSTRUCTION.

APPLICATION FILED I'BB.11, 190B. Patented Nov. 3,

E SHEETS-BHEET 3.

E. H. LUNKEITy & C. M. CONKLIN.

FIEBPROOI WINDOW CONSTRUCTION.

APPLICATION FILED FEB. 11I 1908. 902,979. Patented Nov.3,19os.

5 SHEETS-SHEET 4.

E. H. LUNKBN & C. M. CONKLIN. FIBEPROOF WINDOW CONSTRUCTION.

APPLIUATION ULEB rma. 11, 190B.

902,979. Patented N0v.3,19os.

5 SHEETS-SHEET 5.

UNITED STATES PATENT oEEIoE.

EDMUNDH. LUNKEN AND' CHARLES M. QQNKLlN, QF GINGINNATI, OHIO, ASSIlGNORS TO THE LUNKEN STEEL WINDOW COMPANY, OF OHIO.

FIBEPBOOF WINDOW CONSTRUCTION.

Bpeeication of Letters Patent.

Patented Nov. El,` 1908.

Application led February 11, 1908. Serial No. 415,446.

To all whom 'it may concern:

B'e it known that we, EDMUND H. LUNKEN and CHARLES M. CONKLIN, citizens of the United States, residing at Cincinnati, Ohio, have invented'certain new and useful Improvements in Fire roof Window Construction, of which the fo lowin is a specification.

Our said invention re ates to improvements in fireproof window construction such as forms the subject of an ap lication filed by ourselves in the United tates Patent Ofce on the 4th day of November, 1907, Serial Number 400700.

Amongthe objects of the present invention are the following First, to provide a construction in which the sash shall be guided and held by a tongue and oove joint separate and distinct from tie groove in which the pivot travels.

Second, to provide special forms of joints or weather stri s for securing tight joints in a simple an economical manner.

Third, to provide a simple and economical manner of removably connecting the two parts of the sash frame.

Fourth, to provide a simple economical means of movlng the guide strips inward when it is desired to swing the sash, and, fifth, to provide a strong and simple manner of securing the hinge intles.

With these and other objects in view the invention includes the features of construction and arrangement and combination of parts hereinafter described-and particularlyY set forth in the. appended claims.

y,An embodiment of the invention is illustrated in the accompanying drawings, in

which Figure 1 is a front elevation of a complete window. Fig. 2 is a front elevation of the lowersash, partly broken away. Fig. 3 is a transverse vertical section through the lower sash, the4 lower part of the upper sash, and the sill plate. Fig. 4 is a section on line 4 -4 of Fi 1. Fia. 5 is a horizontal section throng the rside. rail of the sash and the corresponding side of the window casing.y

Fig: 6 is a sectional detail view of one of the guide bars. Figs. 7 and 8 are detail views of the hinge intles. Fig. 9 is a detail of a s ring catch. iig. 10 is a sectional View and ig. 411 is a-sectional perspective of the window Iframe with the cover plates removed, and Fig. 12 is a detail of weather` strip construction.

Referrin by reference characters to these drawings, t e numeral 1 designates the window frame or casing and 2 the window sash. Both of these are constructed of fire proof material, preferably sheet metal, -and, each side of the window frame is provided with outer or side vertical channels 3, and a central or intermediate channel 4, which are preferably formed as integral arts of the removable cover plate 1'* of t e frame 1. The sashes are supported by sash cords 5 designed to be counterbalanced by weights 6 in the usual manner, but as the manner of counterbalancing forms no part of the present invention, a more specific description thereof is deemed unnecessary.

The sash cords are connected to eye ieces 7 in which are journaled the hinge plntles 8 upon which the sash frame hinges or pivots, the eye pieces moving vertically in the channels 3, as the sashes are raised and l0w ered. These hinge pintles are provided with buffers or rotectors which may conveniently be in the shape of rubber or fiber buttons, as indicated at 8".

The portions of the cover plates adjacent to and on each side of these channels are formed or struck up to produce outer beads or ribs 1" which give an ornamental or finished appearance and inner ribs or webs 1c which serve to retain 0r support the sash guiding means in the manner hereinafter described. This sash guiding means comprises bars 9 9 which are located .on opposite sides of the window frame and are provided with ribs or flanges 9 and 9b which are adapted to engage with correspondin grooves or channels in the side edges o the up er and lower sashes respectively to guide t em in their vertical movement.

Under normal conditions the ribs or flanges of the side bars rest in the channels of the sash inthe manner shown in connection with the lower sash in Fig. 5, and thus tween the channels 3 and 4, the edges of these doubled back portions forming the ribs or beads 9l and 9b which engage the channels in the sashes. These side bars are preferably so arran ed that theywill normally be automatica y held in engagement with the sash' A convenient manner of accomplishing this isshown in detail in Fig. 6 in which it will be seen that each bar is provided with upper and lower inclined slots 10 which are en aged by ins 11 extending between the wa s of the c annel 4 and havg their ends secured by upsetting, as shown in Fig. 5.

The weight of the bars coupled with the inclination of the slots causes them to be drawn by gravity into sash engaging position, and they may be easily raised manually to eifect the disenga ement necessary to permit the swin ng o the sash.

It is desira le, however, to provide means for locking the bars in either an elevated or a lowered position. A convenient manner of effecting this is toprovide a spring 12 .in proximity to each har having one end secured by means, such as rivets to a stationary art of the frame and its other end provide with a projection 13 to engage the recesses 14 and 15. in the bar.

In order to enable the spring catch or detent to be released, a'hole is made throu h n the bar, preferably in line with one of t e recesses, as indicated at 16, by which a rod or pin may be inserted to press back the It 1s not necessar that the movable ide bars 9 shall exten the full height o the window frame or casing. They may be made of a length approximately the height spmn of one sash and the remaining portions of the guide ribs be rigid and the Swingin movementof the sash adcomplished bv slidging it from the rigid guide ribs on to thev We have found iyt desirable to provide each guide bar with a reinforcing bar or strip 17 which stili'ens it and adds weight, thereby assistin the action of gravitation. The ends of this and also-the bar 9 are beveled or inclined to the same angle as are the slots 10.

At the upper end the bar 17 is preferably' rolonged intothe upper stationary guide Ear so as to break -oints and prevent any possible danger of t 1e meetin edges ofthe movable and stationary guide ars springing out of line with each other, the extended partr being indicated at 17.

The slight space at the lower inclined end of the bar 17 may be filled by a block 18 secured by screws or rivets to the sill plate 19 and having an inclined u per face which gids in supporting and gui ing the movable The main frame or casing of the window is preferably made of pressed metal in channel form, one of the side members Without the cover plate being shown in cross section in Fig. 10 and the top cross bar or member in cross section in Fig. 4.

The outer wall is corrugated longitudinally for strength as indicated at 20 and the side walls are provided with folds which form flanges 21 which also brace or stiien the frame and serve as guides for the msons in walling in the frame. As clearly sown in Fig. 4, the cover plate embraces the sides of the front edges o the frame member and abuts' agtinst the flanges 21. This construc' tion ma es it desirable toV provide a support a ainst inward pressure, which we accomp ish by bracing webs 22 having angular portions 23 bearlng against the inner faces of the side -walls, and edge ortions 24 clamped between the folded portions 21. At the sides these bracing webs terminate above the bottom leaving spaces 25 for access to the weights.

The sash frame is shown as constructed 'mainly in accordance with the prior application hereinbefore' referred to, of two ollow parts or bars 26 and 27 of sheet metal, between the flanges of which the glass is held. The abutting portions of these bars 26 and 27 have overlapping parts, such as eye portions 26 and 27 struck from one part and entering correspondin cutaway portions or recesses 1n the other, ars or keys 284 being inserted into the eyes to key 'the parts together. The eyes of part of the rails are struck in one irection as shown at 26*l and of the other parts in the opposite direction as shown at 27". This brln s the locking bars of adjoining rails out o alinement or in diilt'erent horizontal lanes. i

We' provide in this orm of window construction, an exceedingly simple and desir-m able form of acking stri for the sill joint which is clear y shown in ig. 3. This consists of a brass weather strip 29 having a central groove or channel' 30 to receive the sill rib 31. The strip 29 is inserted longitudinally of the bottom rail, bein guided and held by the angularly turned e ges 32 of the sheet metal of which the bottom bar is formed.

If desired, the strip 29 can be made of spring'metal so as to have some spring or yielding action.

We rovide also an exceedingly simple and e cient form of weather strip for the meeting rails shown at the top of Fig. 3. This consists of a spring strip 32 carried by the upper rail of the lower sash and designed to abut against a brass strip 33 soldered or otherwise suitably secured to the face of the lower rail of the upper sash. The strip 32 is constructed with a folded over portion which fits into a groove or slips onto the lock seam in the top rail of the lower sash where it is held by a bar or strip 34 and screws 35.

A modification is shown in Fig. l2 in which rivets 36 are used to receive the weather strip and bar, the rivets passing through both side walls of the groove or channel.

It is necessary to provide a strong and durable connection between the hinge ntle 8 and the sheet metal sash frame. T is is accomplished in a desirable manner by the use of a block 37 preferably formed uintegral with the pintle by drop forging. The block is inserted through a cutaway portion of the inner Wall a of the member 26 before the two members of the sash frame are brought together, a slot being provided in the side wall a to permit the passage of the pintle 8. After having been thus inserted the block is secured to the edge wall I) by rivets c, thereby avoiding having any rivets show on either face of the sash.

Having thus described our invention, what we claim is:

l. In combination, a window frame having each of its side members constructed of sheet metal folded to form two channels with an intermediate groove or recess, a movable bar for each recess, said bar having a part seated in the recess and side parts or flanges extending into and bearing against. the adjoining walls of the channel-is, npier and lower sashes adapted to have a sli ing engagement with said movable bars, hinge pintles carried by the sashes and engaging said channels, and counterbalancing means connected with said pintles.

2. In combination a window frame having each of its side members provided with intermediate and two side channels with intervening webs', a bar movably seated in each intermediate channel and having side flanges embracing said webs, and upper and lower sashes having a sliding engagement with said bars.

3. In combination, a window frame having vertical channels, an upper and a lower sash having hinge intles engaging said channels, bars carried) by one portion of the frame and movable in the plane of the sash towards and from the edges of the sash, complementary bars rigidly carried by the remaining portion of the frame, said sashes having tongue and groove engagement with the movable and rigid bars, and counterbalancing means connected to the hinge pintles.

4:. In combination, a window frame having vertical channels in its side walls,r movable bars carried by one portion of the frame, rigid complementary bars carried by the remaining portion, said rigid and movable bars havino inclined abutting ends, inclined slot and pin connections between the movable bars and frame, sashes having S5 sliding engagement with said rigid and movable bars, hinge pintles carried by the sashes and engaging the channels, and counterbalancing means connected with the pintles.

5. In combination, a sheet metal frame member having a corrugated outer face and side faces provided with folded portions forming flanges, and a bracing web having its edges held by said folded portions.

G. In combination, a side frame member of channel shape and having a corrugated outer face, a bracing web extending between the side walls of the frame member, said bracing member providing a weight chain-v ber and terminating above the bottom of the traine member to permit accessto the weight, and a removable cover plate having side portions or anges embracing the sides of the frame member.

7. In combination, a sash comprising two frame members, each consisting of hollow sheet metal bars with their inner faces in contact and having glass retaining means one bar of one member having struck up portions passing through corresponding openings in the second member, a bar of said second member having inwardly struck portions passing through openings in the tirst member, locking keys inserted through said inwardly struck portions, said keys lying in ditlerent vertical planes.

S. In combination, a sill having a rib or tlange, a sash, having a lower bar of sheet metal with achannel therein, a weather strip located therein having a groove to receive the edge of the rib or flange the sheet metal forming the lower bar having edge or flange portions engaging the edges of the weather stri In combination, a sash composed of two separate frame members suitably secured together, the lower bars of said frame members forming a channeled lower edge, and a weather strip longitudinally disposed in said channeled edge and longitudinally removable therefrom, substantially as described.

10. In combination, a sash composed of two separate frame members usuitably secured together, the top bar or rail of one of the frame members havin a groove, a weather strip having a fol ed part seated Within the groove, a retaining strip seated in the groove, and means for securing the retaining strip and weather strip within the groove of the separate frame member, substantially as described.

11. In combination, a sash having a top bar or rail of sheet metal folded to form a groove, a weather strip having a folded part seated within the groove and embracing the edge of the sash, a retainin bar seated in and lillin the groove and rivets or the like passing trough the top bar strip and retaining bar.

12. In combination, a window frame having vertical channels, a sash composed of two separately connected frame members, blocks secured to one of said frame members on o posite sides, hinge intles carried by said blocks and enga ing t e channels of the frame and sash cor s connected with said pintles. 13. In combination, a window frame having vertica'l channels, a sash composed of two separately connected frame members, blocks secured to and within one of said frame members on opposite sides, hinge pintles carried by said blocks and engaging the channels of the frame, and sash cords connected with said pintles.

14. In combination, a window frame having vertical channels in its side members, a movable bar carried by one portion of each of said side members, supplementary bars rigidly carried by the remaining portions of the side members, reinforcing members carried by the movable bars and overlappin the joint between the movable and rigi bars, sashes having hinge pintles engaging the channels and having a sliding engagement with the movable and rigid bars, and counterbalancing means. for the sashes connted to the hinge pintles.

l5. In combination, a window frame having vertical channels in its side members, a. movable bar carried by one portion of each of said side members, supplementary bars rigidly carried by the remaining portions of the side members, said movable and supplementary bars forming sash guides, reinforcing members carried by the movable bars, and means at the top and bottom ends of the reinforcing members for guiding the movable bars.

16. In combination, a window frame having vertical channels in its side members, a movable channel bar carried by. one portion of each side member, said channel bars having an inclined slot and pin connection with the side members and having inclined up er and lower ends, supplementary bars rigidly carried by the remaining portions of said side members and having linclined ends abutting the ends of the movable bars, and a sash guided by said movable and rigid bars.

In testimony whereof, we affix our signatures in presence of two witnesses.

EDMUND H. LUNKEN. CHAS. M. CONICI'JIN. Witnesses:

LAM THOMPSON, WM. H. MUBUGH. 

